Forum Discussion

ariklin's avatar
ariklin
Network Novice
4 years ago

Conditional Call Forwarding No Longer Working

About a month or so ago my conditional call forwarding for unanswered calls stopped working.  I have had it working for years and was able to send them to Google Voicemail to handle.  I did nothing and one day I noticed it no longer worked.  I have tried the GSM codes, the call forwarding on my phone, etc and get modem_err or other error codes.  I can still forward unavailable or busy calls it is only the unanswered that doesn’t work.  Anyone else have this issue and been able to solve it?  

  • Try the following: 1) Turn off WiFi 2) put the phone in 2G/3G mode 3) try to set the conditional forwarding either by the menu or hash codes. I find that sometimes LTE just doesn’t get along with GSM service codes and WiFi Calling is totally out.

  • ariklin's avatar
    ariklin
    Network Novice

    I have tried doing it through the phone settings but get a Modem_Err message or Network or Sim Error.  I can successfully do unconditional forwarding but cannot for conditional for unavailable or unanswered without getting an error.  I have had this phone for awhile and it was working and then suddenly stopped about 6 weeks ago.

  • tmo_mike_c's avatar
    tmo_mike_c
    T-Mobile Employee

    It could be a setting within the phone. For example, our Manage calls: Samsung Galaxy S10+ has steps for changing call forwarding options. Now, I understand that may not be your phone, but you should be able to find steps for your device.